Blue Light Filter for Eye Care is an app (or website) designed to help protect users' eyes from the damaging effects of blue light emitted from digital screens and devices. This app (or website) works by reducing the amount of blue light emitted from digital screens and devices, so users can work, study and play without straining their eyes. The app (or website) also includes features such as night-shift mode, which adjusts the color temperature of the display to a warmer, more comfortable level and a sleep timer that dims the display at a set time. Additionally, the app (or website) includes customizable settings so users can adjust the amount of blue light and color temperature to find the perfect balance for their eyes.
Redshift has an automatic mode based on geolocation and sun position, it works very well on Manjaro Fringilla (Linux). Saved me some money (I was thinking of buying a display with eye care features).